Tomato hybrid SV4483TD and parents thereof

ABSTRACT

The invention provides seed and plants of tomato hybrid SV4483TD and the parent lines thereof. The invention thus relates to the plants, seeds and tissue cultures of tomato hybrid SV4483TD and the parent lines thereof, and to methods for producing a tomato plant produced by crossing such plants with themselves or with another tomato plant, such as a plant of another genotype. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of such plants, including the fruit and gametes of such plants.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a divisional of U.S. Ser. No. 14/875,481, filed Oct.5, 2015, now U.S. Pat. No. 9,717,201, which claims the priority of U.S.Provisional Appl. Ser. No. 62/212,463, filed Aug. 31, 2015, the entiredisclosures of which are incorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to the field of plant breeding and, morespecifically, to the development of tomato hybrid SV4483TD and theinbred tomato lines FDR-9Q09137 and FDR-15-2078.

BACKGROUND OF THE INVENTION

The goal of vegetable breeding is to combine various desirable traits ina single variety/hybrid. Such desirable traits may include any traitdeemed beneficial by a grower and/or consumer, including greater yield,resistance to insects or disease, tolerance to environmental stress, andnutritional value.

Breeding techniques take advantage of a plant's method of pollination.There are two general methods of pollination: a plant self-pollinates ifpollen from one flower is transferred to the same or another flower ofthe same plant or plant variety. A plant cross-pollinates if pollencomes to it from a flower of a different plant variety.

Plants that have been self-pollinated and selected for type over manygenerations become homozygous at almost all gene loci and produce auniform population of true breeding progeny, a homozygous plant. A crossbetween two such homozygous plants of different genotypes produces auniform population of hybrid plants that are heterozygous for many geneloci. Conversely, a cross of two plants each heterozygous at a number ofloci produces a population of hybrid plants that differ genetically andare not uniform. The resulting non-uniformity makes performanceunpredictable.

The development of uniform varieties requires the development ofhomozygous inbred plants, the crossing of these inbred plants, and theevaluation of the crosses. Pedigree breeding and recurrent selection areexamples of breeding methods that have been used to develop inbredplants from breeding populations. Those breeding methods combine thegenetic backgrounds from two or more plants or various other broad-basedsources into breeding pools from which new lines and hybrids derivedtherefrom are developed by selfing and selection of desired phenotypes.The new lines and hybrids are evaluated to determine which of those havecommercial potential.

SUMMARY OF THE INVENTION

In one aspect, the present invention provides a tomato plant of thehybrid designated SV4483TD, the tomato line FDR-9Q09137 or tomato lineFDR-15-2078. Also provided are tomato plants having all thephysiological and morphological characteristics of such a plant. Partsof these tomato plants are also provided, for example, including pollen,an ovule, scion, a rootstock, a fruit, and a cell of the plant.

In another aspect of the invention, a plant of tomato hybrid SV4483TDand/or tomato lines FDR-9Q09137 and FDR-15-2078 comprising an addedheritable trait is provided. The heritable trait may comprise a geneticlocus that is, for example, a dominant or recessive allele. In oneembodiment of the invention, a plant of tomato hybrid SV4483TD and/ortomato lines FDR-9Q09137 and FDR-15-2078 is defined as comprising asingle locus conversion. In specific embodiments of the invention, anadded genetic locus confers one or more traits such as, for example,herbicide tolerance, insect resistance, disease resistance, and modifiedcarbohydrate metabolism. In further embodiments, the trait may beconferred by a naturally occurring gene introduced into the genome of aline by backcrossing, a natural or induced mutation, or a transgeneintroduced through genetic transformation techniques into the plant or aprogenitor of any previous generation thereof. When introduced throughtransformation, a genetic locus may comprise one or more genesintegrated at a single chromosomal location.

The invention also concerns the seed of tomato hybrid SV4483TD and/ortomato lines FDR-9Q09137 and FDR-15-2078. The tomato seed of theinvention may be provided as an essentially homogeneous population oftomato seed of tomato hybrid SV4483TD and/or tomato lines FDR-9Q09137and FDR-15-2078. Essentially homogeneous populations of seed aregenerally free from substantial numbers of other seed. Therefore, insome embodiments, seed of hybrid SV4483TD and/or tomato linesFDR-9Q09137 and FDR-15-2078 may be defined as forming at least about 97%of the total seed, including at least about 98%, 99% or more of theseed. The seed population may be separately grown to provide anessentially homogeneous population of tomato plants designated SV4483TDand/or tomato lines FDR-9Q09137 and FDR-15-2078.

In yet another aspect of the invention, a tissue culture of regenerablecells of a tomato plant of hybrid SV4483TD and/or tomato linesFDR-9Q09137 and FDR-15-2078 is provided. The tissue culture willpreferably be capable of regenerating tomato plants capable ofexpressing all of the physiological and morphological characteristics ofthe starting plant, and of regenerating plants having substantially thesame genotype as the starting plant. Examples of some of thephysiological and morphological characteristics of the hybrid SV4483TDand/or tomato lines FDR-9Q09137 and FDR-15-2078 include those traits setforth in the tables herein. The regenerable cells in such tissuecultures may be derived, for example, from embryos, meristems,cotyledons, pollen, leaves, anthers, roots, root tips, pistils, flowers,seed and stalks. Still further, the present invention provides tomatoplants regenerated from a tissue culture of the invention, the plantshaving all the physiological and morphological characteristics of hybridSV4483TD and/or tomato lines FDR-9Q09137 and FDR-15-2078.

In still yet another aspect of the invention, processes are provided forproducing tomato seeds, plants and fruit, which processes generallycomprise crossing a first parent tomato plant with a second parenttomato plant, wherein at least one of the first or second parent tomatoplants is a plant of tomato line FDR-9Q09137 or tomato line FDR-15-2078.These processes may be further exemplified as processes for preparinghybrid tomato seed or plants, wherein a first tomato plant is crossedwith a second tomato plant of a different, distinct genotype to providea hybrid that has, as one of its parents, a plant of tomato lineFDR-9Q09137 or tomato line FDR-15-2078. In these processes, crossingwill result in the production of seed. The seed production occursregardless of whether the seed is collected or not.

In one embodiment of the invention, the first step in “crossing”comprises planting seeds of a first and second parent tomato plant,often in proximity so that pollination will occur for example, mediatedby insect vectors. Alternatively, pollen can be transferred manually.Where the plant is self-pollinated, pollination may occur without theneed for direct human intervention other than plant cultivation.

A second step may comprise cultivating or growing the seeds of first andsecond parent tomato plants into plants that bear flowers. A third stepmay comprise preventing self-pollination of the plants, such as byemasculating the flowers (i.e., killing or removing the pollen).

A fourth step for a hybrid cross may comprise cross-pollination betweenthe first and second parent tomato plants. Yet another step comprisesharvesting the seeds from at least one of the parent tomato plants. Theharvested seed can be grown to produce a tomato plant or hybrid tomatoplant.

The present invention also provides the tomato seeds and plants producedby a process that comprises crossing a first parent tomato plant with asecond parent tomato plant, wherein at least one of the first or secondparent tomato plants is a plant of tomato hybrid SV4483TD and/or tomatolines FDR-9Q09137 and FDR-15-2078. In one embodiment of the invention,tomato seed and plants produced by the process are first generation (F₁)hybrid tomato seed and plants produced by crossing a plant in accordancewith the invention with another, distinct plant. The present inventionfurther contemplates plant parts of such an F₁ hybrid tomato plant, andmethods of use thereof. Therefore, certain exemplary embodiments of theinvention provide an F₁ hybrid tomato plant and seed thereof.

In still yet another aspect, the present invention provides a method ofproducing a plant derived from hybrid SV4483TD and/or tomato linesFDR-9Q09137 and FDR-15-2078, the method comprising the steps of: (a)preparing a progeny plant derived from hybrid SV4483TD and/or tomatolines FDR-9Q09137 and FDR-15-2078, wherein said preparing comprisescrossing a plant of the hybrid SV4483TD and/or tomato lines FDR-9Q09137and FDR-15-2078 with a second plant; and (b) crossing the progeny plantwith itself or a second plant to produce a seed of a progeny plant of asubsequent generation. In further embodiments, the method mayadditionally comprise: (c) growing a progeny plant of a subsequentgeneration from said seed of a progeny plant of a subsequent generationand crossing the progeny plant of a subsequent generation with itself ora second plant; and repeating the steps for an additional 3-10generations to produce a plant derived from hybrid SV4483TD and/ortomato lines FDR-9Q09137 and FDR-15-2078. The plant derived from hybridSV4483TD and/or tomato lines FDR-9Q09137 and FDR-15-2078 may be aninbred line, and the aforementioned repeated crossing steps may bedefined as comprising sufficient inbreeding to produce the inbred line.In the method, it may be desirable to select particular plants resultingfrom step (c) for continued crossing according to steps (b) and (c). Byselecting plants having one or more desirable traits, a plant derivedfrom hybrid SV4483TD and/or tomato lines FDR-9Q09137 and FDR-15-2078 isobtained which possesses some of the desirable traits of the line/hybridas well as potentially other selected traits.

In certain embodiments, the present invention provides a method ofproducing food or feed comprising: (a) obtaining a plant of tomatohybrid SV4483TD and/or tomato lines FDR-9Q09137 and FDR-15-2078, whereinthe plant has been cultivated to maturity, and (b) collecting at leastone tomato from the plant.

In still yet another aspect of the invention, the genetic complement oftomato hybrid SV4483TD and/or tomato lines FDR-9Q09137 and FDR-15-2078is provided. The phrase “genetic complement” is used to refer to theaggregate of nucleotide sequences, the expression of which sequencesdefines the phenotype of, in the present case, a tomato plant, or a cellor tissue of that plant. A genetic complement thus represents thegenetic makeup of a cell, tissue or plant, and a hybrid geneticcomplement represents the genetic make up of a hybrid cell, tissue orplant. The invention thus provides tomato plant cells that have agenetic complement in accordance with the tomato plant cells disclosedherein, and seeds and plants containing such cells.

Plant genetic complements may be assessed by genetic marker profiles,and by the expression of phenotypic traits that are characteristic ofthe expression of the genetic complement, e.g., isozyme typing profiles.It is understood that hybrid SV4483TD and/or tomato lines FDR-9Q09137and FDR-15-2078 could be identified by any of the many well knowntechniques such as, for example, Simple Sequence Length Polymorphisms(SSLPs) (Williams et al., Nucleic Acids Res., 1 8:6531-6535, 1990),Randomly Amplified Polymorphic DNAs (RAPDs), DNA AmplificationFingerprinting (DAF), Sequence Characterized Amplified Regions (SCARs),Arbitrary Primed Polymerase Chain Reaction (AP-PCR), Amplified FragmentLength Polymorphisms (AFLPs) (EP 534 858, specifically incorporatedherein by reference in its entirety), and Single NucleotidePolymorphisms (SNPs) (Wang et al., Science, 280:1077-1082, 1998).

In still yet another aspect, the present invention provides hybridgenetic complements, as represented by tomato plant cells, tissues,plants, and seeds, formed by the combination of a haploid geneticcomplement of a tomato plant of the invention with a haploid geneticcomplement of a second tomato plant, preferably, another, distincttomato plant. In another aspect, the present invention provides a tomatoplant regenerated from a tissue culture that comprises a hybrid geneticcomplement of this invention.

Any embodiment discussed herein with respect to one aspect of theinvention applies to other aspects of the invention as well, unlessspecifically noted.

The term “about” is used to indicate that a value includes the standarddeviation of the mean for the device or method being employed todetermine the value. The use of the term “or” in the claims is used tomean “and/or” unless explicitly indicated to refer to alternatives onlyor the alternatives are mutually exclusive. When used in conjunctionwith the word “comprising” or other open language in the claims, thewords “a” and “an” denote “one or more,” unless specifically notedotherwise. The terms “comprise,” “have” and “include” are open-endedlinking verbs. Any forms or tenses of one or more of these verbs, suchas “comprises,” “comprising,” “has,” “having,” “includes” and“including,” are also open-ended. For example, any method that“comprises,” “has” or “includes” one or more steps is not limited topossessing only those one or more steps and also covers other unlistedsteps. Similarly, any plant that “comprises,” “has” or “includes” one ormore traits is not limited to possessing only those one or more traitsand covers other unlisted traits.

Other objects, features and advantages of the present invention willbecome apparent from the following detailed description. It should beunderstood, however, that the detailed description and any specificexamples provided, while indicating specific embodiments of theinvention, are given by way of illustration only, since various changesand modifications within the spirit and scope of the invention willbecome apparent to those skilled in the art from this detaileddescription.

DETAILED DESCRIPTION OF THE INVENTION

The invention provides methods and compositions relating to plants,seeds and derivatives of tomato hybrid SV4483TD, tomato line FDR-9Q09137and tomato line FDR-15-2078.

Tomato hybrid SV4483TD, also known as EX-15504996, is a fresh marketdeterminate round tomato variety. It features a strong plant type withgood fruit cover and a high percentage of extra large fruit with goodfruit quality. The hybrid is resistant to Alternaria alternata f. sp.lycopersici (Aal), Fusarium oxysporum f. sp. lycopersici US Races 1,2,3(Fol1, Fol2, Fol3), Tomato Spotted Wilt Virus (TSWV), Tomato Yellow LeafCurl Virus (TYLCV), Stemphylium solani (Ss), and Verticilliumdahliae/Verticillium albo-atrum US race 1 (Va/Vd). It provides addedresistance to Fusarium oxysporum f. sp. lycopersici US Races 1,2,3(Fol1, Fol2, Fol3), Tomato Spotted Wilt Virus (TSWV) and Tomato YellowLeaf Curl Virus (TYLCV) when compared to widely grown Monsantocommercial variety Florida 47R. It provides added resistance to Fusariumoxysporum f. sp. lycopersici US Race 3, Tomato Spotted Wilt Virus (TSWV)and has higher fruit quality when compared to HM1823.

FDR-9Q09137 develops a medium plant with light cover. It produces aheavy set of smooth, firm, deep oblate extra large sized fruit. Thefruit have a jointed pedicel, uniform green shoulders and are red atmaturity. The line is resistant to Fusarium oxysporum f. sp. lycopersiciUS Race 3 (Fol3). The line is also resistant to Alternaria alternata f.sp. lycopersici (Aa1), Fusarium oxysporum f. sp. lycopersici US Races 1and 2 (Foil, Fol2), along with Verticillium dahliae/Verticilliumalbo-atrum US race 1 (Va/Vd).

Parent line FDR-15-2078 was disclosed in U.S. Pat. No. 8,097,789, issuedon Jan. 17, 2012, and in U.S. Pat. No. 8,097,790, issued on Jan. 17,2012.

A. Origin and Breeding History of Tomato Hybrid SV4483TD

The parents of hybrid SV4483TD are FDR-9Q09137 and FDR-15-2078. Theparent lines are uniform and stable, as is a hybrid produced therefrom.A small percentage of variants can occur within commercially acceptablelimits for almost any characteristic during the course of repeatedmultiplication. However no variants are expected.

B. Physiological and Morphological Characteristics of Tomato HybridSV4483TD, Tomato Line FDR-9Q09137 and Tomato Line FDR-15-2078

In accordance with one aspect of the present invention, there isprovided a plant having the physiological and morphologicalcharacteristics of tomato hybrid SV4483TD and the parent lines thereof.A description of the physiological and morphological characteristics ofsuch plants is presented in Tables 1-2.

TABLE 1 Physiological and Morphological Characteristics of HybridSV4483TD Comparison: Characteristic SV4483TD FLORIDA 47 1. Seedlinganthocyanin coloration of present present hypocotyl habit of 3-4 weekold seedling normal normal 2. Mature Plant height 60.5 cm 61.9 cm growthtype determinate determinate form lax, open normal size of canopy(compared to medium medium others of similar type) habit sprawlingsemi-erect 3. Stem branching intermediate sparse branching at cotyledonor first absent absent leafy node number of nodes between first 4 to 7 4to 7 inflorescence number of nodes between early 1 to 4 1 to 4 (1^(st)to 2^(nd), 2^(nd) to 3^(rd) ) inflorescences number of nodes betweenlater 1 to 4 1 to 4 developing inflorescences pubescence on youngerstems moderately moderately hairy hairy 4. Leaf type (mature leafbeneath the 3^(rd) tomato tomato inflorescence) margins of majorleaflets (mature shallowly shallowly leaf beneath the 3^(rd) toothed ortoothed or inflorescence) scalloped scalloped marginal rolling orwiltiness slight moderate (mature leaf beneath the 3^(rd) inflorescence)onset of leaflet rolling (mature mid season mid season leaf beneath the3rd inflorescence) surface of major leaflets (mature rugose rugose leafbeneath the 3^(rd) (bumpy or inflorescence) veiny) pubescence (matureleaf beneath normal normal the 3^(rd) inflorescence) 5. Inflorescencetype (make observations on the simple simple 3rd inflorescence) averagenumber of flowers in 4.4 4.1 inflorescence (3^(rd) inflorescence) leafyor “running” inflorescence absent absent (3^(rd) inflorescence) 6.Flower calyx normal (lobes normal awl shaped) calyx-lobes shorter thandistinctly corolla longer than corolla corolla color yellow yellow stylepubescence sparse dense anthers all fused all fused into tube into tubefasciation (1^(st) flower of 2^(nd) or 3^(rd) absent absentinflorescence) 7. Fruit abscission layer present present (pedicellate)surface smooth smooth base color (mature-green stage) apple or apple ormedium medium green green pattern (mature-green stage) uniform uniformgreen green shape of transverse section (3rd round flattened fruit of2nd or 3rd cluster) shape of blossom end (3rd fruit flat flat of 2nd or3rd cluster) shape of stem end (3^(rd) fruit of indented indented 2^(nd)or 3^(rd) cluster) shape of pistil scar (3rd fruit of irregularirregular 2nd or 3rd cluster) point of detachment of fruit at at pedicelat pedicel harvest (3^(rd) fruit of 2^(nd) or 3^(rd) joint jointcluster) stem scar size large medium length of dedicel (from joint to12.5 mm 13. mm calyx attachment) (3rd fruit of 2nd or 3rd cluster)length of mature fruit (3rd fruit 67.8 mm 62.5 mm of 2nd or 3rd cluster)(stem axis) diameter of fruit (3rd fruit of 2nd 81.3 mm 71.1 mm or 3rdcluster) (at widest point) weight of mature fruit (3rd fruit 257.1 gm182.9 gm of 2nd or 3rd cluster) core present present number of loculesfive or more five or more color, full ripe red red flesh color,full-ripe red/crimson red/crimson flesh color with lighter with lighterand darker and darker areas in walls areas in walls locular gel color oftable-ripe red red fruit ripening (blossom-to-stem axis) uniform uniformripening (peripheral-to-central- uniformity uniformity radial axis)epidermis color yellow yellow epidermis easy-peel easy-peel epidermistexture average tender thickness of pericarp 6.1 mm 6.0 mm 8. Phenologyseeding to 50% flow (1 open on 55 61 50% of plants) (days) seeding toonce over harvest (if 106 109 applicable) (days) 9. Adaptation culturefield field 10. Chemistry and Composition of Full-Ripe Fruits pH 4.4 4.3titratable acidity, as % citric 0.2 0.4 total solids (dry matter, seedsand 4.1 4.8 skin removed) (percentage total content) soluble Solids as°Brix 3.6 4.5 *These are typical values. Values may vary due toenvironment. Other values that are substantially equivalent are alsowithin the scope of the invention.

TABLE 2 Physiological and Morphological Characteristics of LineFDR-9Q09137 FDR- Comparison: Characteristic 9Q09137 Florida 47 1.Seedling anthocyanin in hypocotyl of absent present 2-15 cm seedlinghabit of 3-4 week old seedling normal normal 2. Mature Plant height 57.9cm 62.8 cm growth type determinate determinate Only determinate growthtype few few varieties: number of inflorescences on mains tem (sideshoots to be removed) form normal normal size of canopy (compared toothers medium medium of similar type) habit semi-erect semi-erect 3.Stem anthocyanin coloration weak absent or very weak branching sparseintermediate branching at cotyledon or first present present leafy nodenumber of nodes between first 4 to 7 4 to 7 inflorescence number ofnodes between early (1^(st) 1 to 4 1 to 4 to 2^(nd), 2^(nd) to 3^(rd))inflorescences number of nodes between later 1 to 4 1 to 4 developinginflorescences pubescence on younger stems moderately moderately hairyhairy 4. Leaf type (mature leaf beneath the 3^(rd) tomato tomatoinflorescence) type of blade bipinnate bipinnate margins of majorleaflets (mature shallowly shallowly leaf beneath the 3^(rd)inflorescence) toothed or toothed or scalloped scalloped marginalrolling or wiltiness slight moderate (mature leaf beneath the 3^(rd)inflorescence) onset of leaflet rolling (mature leaf early season midseason beneath the 3rd inflorescence) surface of major leaflets (maturerugose smooth leaf beneath the 3^(rd) inflorescence) (bumpy or veiny)pubescence (mature leaf beneath normal normal the 3^(rd) inflorescence)attitude (*refer to photos in TG if semi-erect semi-erect needed) lengthmedium long width medium broad size of leaflets small small intensity ofgreen color dark dark glossiness medium medium blistering (refer to TGfor strong medium explanation of the difference between blistering andcreasing) attitude of petiole of leaflet in semi-erect horizontalrelation to main axis 5. Inflorescence type mainly mainly uniparousuniparous type (3^(rd) inflorescence) (make simple simple observationson the 3rd inflorescence) average number of flowers in 5.1 4.4inflorescence (3^(rd) inflorescence) leafy or “running” inflorescenceabsent absent (3^(rd) inflorescence) 6. Flower color yellow yellow calyxnormal (lobes normal awl shaped) calyx-lobes shorter than approx.corolla equaling corolla corolla color yellow yellow style pubescenceabsent sparse anthers all fused all fused into tube into tube fasciation(1^(st) flower of 2^(nd) or 3^(rd) absent absent inflorescence)Peduncle: abscission layer present present (pedicellate) Only varietieswith peduncle long long abscission layer present: Peduncle: length 7.Fruit surface smooth smooth base color (mature-green stage) apple orlight green medium green pattern (mature-green stage) uniform uniformgreen green green shoulder (before maturity) absent absent green stripes(before maturity) absent absent size large large ratio length/diametermoderately medium compressed typical shape in longitudinal ovate obovatesection (3^(rd) fruit of 2^(nd) or 3^(rd) cluster) shape in longitudinalsection cordate obovate shape of transverse/cross section round angular(3^(rd) fruit of 2^(nd) or 3^(rd) cluster) shape of blossom end flatflat shape of stem end (3rd fruit of 2nd indented indented or 3rdcluster) shape of blossom end flat to pointed flat shape of pistil scar(3^(rd) fruit of 2^(nd) irregular irregular or 3^(rd) cluster) ribbingat peduncle end weak weak depression at peduncle end medium weak size ofstem/peduncle scar large medium size of blossom scar large medium pointof detachment of fruit at at pedicel at pedicel harvest (3^(rd) fruit of2^(nd) or 3^(rd) joint joint cluster) length of dedicel (from joint to14.1 mm 12.0 mm calyx attachment) length of mature fruit (stem axis)64.0 mm 61.1 mm diameter of fruit at widest point 72.2 mm 68.6 mm weightof mature fruit 203.9 gm 184.9 gm core present present diameter of corein cross section in large large relation to total diameter number oflocules five or more five or more number of locules (*refer to TG four,five or four, five or for pictures of locules) six six color, full ripered red color (at maturity) red red flesh color, full-ripe red/crimsonred color of flesh (at maturity) red red glossiness of skin strongstrong flesh color with lighter uniform and darker areas in wallslocular gel color of table-ripe fruit red red firmness soft medium shelflife short short time of flowering late late time of maturity mediummedium ripening (blossom-to-stem axis) blossom-to- uniform stem endripening (peripheral-to-central- inside out uniformity radial axis)epidermis color yellow yellow epidermis easy-peel normal epidermistexture average tender thickness of pericarp medium medium sensitivityto slivering insensitive insensitive 8. Phenology seeding to 50% flow (1open on 61 63 50% of plants) (days) seeding to once over harvest (if 123123 applicable) (days) 9. Adaptation culture field field 10. Chemistryand Composition of Full-Ripe Fruits pH 4.3 4.3 titratable acidity, as %citric 0.37 0.42 total solids (dry matter, seeds and 4.7 5.6 skinremoved) (percentage total content) soluble Solids as °Brix 4.4 5.1*These are typical values. Values may vary due to environment. Othervalues that are substantially equivalent are also within the scope ofthe invention.

C. Breeding Tomato Plants

One aspect of the current invention concerns methods for producing seedof tomato hybrid SV4483TD involving crossing tomato lines FDR-9Q09137and FDR-15-2078. Alternatively, in other embodiments of the invention,hybrid SV4483TD, line FDR-9Q09137, or line FDR-15-2078 may be crossedwith itself or with any second plant. Such methods can be used forpropagation of hybrid SV4483TD and/or the tomato lines FDR-9Q09137 andFDR-15-2078, or can be used to produce plants that are derived fromhybrid SV4483TD and/or the tomato lines FDR-9Q09137 and FDR-15-2078.Plants derived from hybrid SV4483TD and/or the tomato lines FDR-9Q09137and FDR-15-2078 may be used, in certain embodiments, for the developmentof new tomato varieties.

The development of new varieties using one or more starting varieties iswell known in the art. In accordance with the invention, novel varietiesmay be created by crossing hybrid SV4483TD followed by multiplegenerations of breeding according to such well known methods. Newvarieties may be created by crossing with any second plant. In selectingsuch a second plant to cross for the purpose of developing novel lines,it may be desired to choose those plants which either themselves exhibitone or more selected desirable characteristics or which exhibit thedesired characteristic(s) when in hybrid combination. Once initialcrosses have been made, inbreeding and selection take place to producenew varieties. For development of a uniform line, often five or moregenerations of selfing and selection are involved.

Uniform lines of new varieties may also be developed by way ofdouble-haploids. This technique allows the creation of true breedinglines without the need for multiple generations of selfing andselection. In this manner true breeding lines can be produced in aslittle as one generation. Haploid embryos may be produced frommicrospores, pollen, anther cultures, or ovary cultures. The haploidembryos may then be doubled autonomously, or by chemical treatments(e.g. colchicine treatment). Alternatively, haploid embryos may be growninto haploid plants and treated to induce chromosome doubling. In eithercase, fertile homozygous plants are obtained. In accordance with theinvention, any of such techniques may be used in connection with a plantof the invention and progeny thereof to achieve a homozygous line.

Backcrossing can also be used to improve an inbred plant. Backcrossingtransfers a specific desirable trait from one inbred or non-inbredsource to an inbred that lacks that trait. This can be accomplished, forexample, by first crossing a superior inbred (A) (recurrent parent) to adonor inbred (non-recurrent parent), which carries the appropriate locusor loci for the trait in question. The progeny of this cross are thenmated back to the superior recurrent parent (A) followed by selection inthe resultant progeny for the desired trait to be transferred from thenon-recurrent parent. After five or more backcross generations withselection for the desired trait, the progeny have the characteristicbeing transferred, but are like the superior parent for most or almostall other loci. The last backcross generation would be selfed to givepure breeding progeny for the trait being transferred.

The plants of the present invention are particularly well suited for thedevelopment of new lines based on the elite nature of the geneticbackground of the plants. In selecting a second plant to cross withSV4483TD and/or tomato lines FDR-9Q09137 and FDR-15-2078 for the purposeof developing novel tomato lines, it will typically be preferred tochoose those plants which either themselves exhibit one or more selecteddesirable characteristics or which exhibit the desired characteristic(s)when in hybrid combination. Examples of desirable traits may include, inspecific embodiments, high seed yield, high seed germination, seedlingvigor, high fruit yield, disease tolerance or resistance, andadaptability for soil and climate conditions. Consumer-driven traits,such as a fruit shape, color, texture, and taste are other examples oftraits that may be incorporated into new lines of tomato plantsdeveloped by this invention.

D. Performance Characteristics

As described above, hybrid SV4483TD exhibits desirable traits, as dotomato lines FDR-9Q09137 and FDR-15-2078, or hybrids derived therefrom.The performance characteristics of hybrid SV4483TD and tomato linesFDR-9Q09137 and FDR-15-2078 were the subject of an objective analysis ofthe performance traits relative to other varieties. The results of theanalysis are presented below.

FDR-9Q09137 develops a medium plant with light cover. It produces aheavy set of smooth, firm, deep oblate extra large sized fruit. Thefruit have a jointed pedicel, uniform green shoulders and are red atmaturity. The line is resistant to Fusarium oxysporum f. sp. lycopersiciUS Race 3 (Fol3). The line is also resistant to Alternaria alternata f.sp. lycopersici (Aal), Fusarium oxysporum f. sp. lycopersici US Races 1and 2 (Foil, Fol2), along with Verticillium dahliae/Verticilliumalbo-atrum US race 1 (Va/Vd).

The most similar commercial variety to FDR-9Q09137 is believed to beFlorida 47R. The characteristics, which best describe the differencesbetween the two include (but may not be limited to):

FDR-9Q09139 has resistance to resistance to Fusarium oxysporum f. sp.lycopersici US Race 3 (Fol3) while Florida 47R is susceptible.

TABLE 3 Performance Characteristics for hybrid SV4483TD and comparativevarieties. Bacterial Fruit Plant Severity Quality Average Vigor RatingRating YIELD Fruit Variety—Average (1 best- (1 best- (1 best- in Weightin across 2 trials 9 worst) 9 worst) 9 worst) Kilograms Grams HM1823 5 45 34.7 222 SV4483TD 5 5 4 29.4 219 SV6100TD 4 4 4 31.8 224

TABLE 4 Performance Characteristics for hybrid SV4483TD and comparativevarieties. Variety—Key Disease Resistance TSWV Fol3 For Ma/Mi/Mj TYLCVHM1823 SUS SUS RES SUS SUS SV44831D RES RES SUS RES RES SV6100TD SUS RESRES RES RES

E. Further Embodiments of the Invention

In certain aspects of the invention, plants described herein areprovided modified to include at least a first desired heritable trait.Such plants may, in one embodiment, be developed by a plant breedingtechnique called backcrossing, wherein essentially all of themorphological and physiological characteristics of a variety arerecovered in addition to a genetic locus transferred into the plant viathe backcrossing technique. The term single locus converted plant asused herein refers to those tomato plants which are developed by a plantbreeding technique called backcrossing, wherein essentially all of themorphological and physiological characteristics of a variety arerecovered in addition to the single locus transferred into the varietyvia the backcrossing technique. By essentially all of the morphologicaland physiological characteristics, it is meant that the characteristicsof a plant are recovered that are otherwise present when compared in thesame environment, other than an occasional variant trait that mightarise during backcrossing or direct introduction of a transgene.

Backcrossing methods can be used with the present invention to improveor introduce a characteristic into the present variety. The parentaltomato plant which contributes the locus for the desired characteristicis termed the nonrecurrent or donor parent. This terminology refers tothe fact that the nonrecurrent parent is used one time in the backcrossprotocol and therefore does not recur. The parental tomato plant towhich the locus or loci from the nonrecurrent parent are transferred isknown as the recurrent parent as it is used for several rounds in thebackcrossing protocol.

In a typical backcross protocol, the original variety of interest(recurrent parent) is crossed to a second variety (nonrecurrent parent)that carries the single locus of interest to be transferred. Theresulting progeny from this cross are then crossed again to therecurrent parent and the process is repeated until a tomato plant isobtained wherein essentially all of the morphological and physiologicalcharacteristics of the recurrent parent are recovered in the convertedplant, in addition to the single transferred locus from the nonrecurrentparent.

The selection of a suitable recurrent parent is an important step for asuccessful backcrossing procedure. The goal of a backcross protocol isto alter or substitute a single trait or characteristic in the originalvariety. To accomplish this, a single locus of the recurrent variety ismodified or substituted with the desired locus from the nonrecurrentparent, while retaining essentially all of the rest of the desiredgenetic, and therefore the desired physiological and morphologicalconstitution of the original variety. The choice of the particularnonrecurrent parent will depend on the purpose of the backcross; one ofthe major purposes is to add some commercially desirable trait to theplant. The exact backcrossing protocol will depend on the characteristicor trait being altered and the genetic distance between the recurrentand nonrecurrent parents. Although backcrossing methods are simplifiedwhen the characteristic being transferred is a dominant allele, arecessive allele, or an additive allele (between recessive anddominant), may also be transferred. In this instance it may be necessaryto introduce a test of the progeny to determine if the desiredcharacteristic has been successfully transferred.

In one embodiment, progeny tomato plants of a backcross in which a plantdescribed herein is the recurrent parent comprise (i) the desired traitfrom the non-recurrent parent and (ii) all of the physiological andmorphological characteristics of tomato the recurrent parent asdetermined at the 5% significance level when grown in the sameenvironmental conditions.

New varieties can also be developed from more than two parents. Thetechnique, known as modified backcrossing, uses different recurrentparents during the backcrossing. Modified backcrossing may be used toreplace the original recurrent parent with a variety having certain moredesirable characteristics or multiple parents may be used to obtaindifferent desirable characteristics from each.

With the development of molecular markers associated with particulartraits, it is possible to add additional traits into an established germline, such as represented here, with the end result being substantiallythe same base germplasm with the addition of a new trait or traits.Molecular breeding, as described in Moose and Mumm, 2008 (PlantPhysiology, 147: 969-977), for example, and elsewhere, provides amechanism for integrating single or multiple traits or QTL into an eliteline. This molecular breeding-facilitated movement of a trait or traitsinto an elite line may encompass incorporation of a particular genomicfragment associated with a particular trait of interest into the eliteline by the mechanism of identification of the integrated genomicfragment with the use of flanking or associated marker assays. In theembodiment represented here, one, two, three or four genomic loci, forexample, may be integrated into an elite line via this methodology. Whenthis elite line containing the additional loci is further crossed withanother parental elite line to produce hybrid offspring, it is possibleto then incorporate at least eight separate additional loci into thehybrid. These additional loci may confer, for example, such traits as adisease resistance or a fruit quality trait. In one embodiment, eachlocus may confer a separate trait. In another embodiment, loci may needto be homozygous and exist in each parent line to confer a trait in thehybrid. In yet another embodiment, multiple loci may be combined toconfer a single robust phenotype of a desired trait.

Many single locus traits have been identified that are not regularlyselected for in the development of a new inbred but that can be improvedby backcrossing techniques. Single locus traits may or may not betransgenic; examples of these traits include, but are not limited to,herbicide resistance, resistance to bacterial, fungal, or viral disease,insect resistance, modified fatty acid or carbohydrate metabolism, andaltered nutritional quality. These comprise genes generally inheritedthrough the nucleus.

Direct selection may be applied where the single locus acts as adominant trait. For this selection process, the progeny of the initialcross are assayed for viral resistance and/or the presence of thecorresponding gene prior to the backcrossing. Selection eliminates anyplants that do not have the desired gene and resistance trait, and onlythose plants that have the trait are used in the subsequent backcross.This process is then repeated for all additional backcross generations.

Selection of tomato plants for breeding is not necessarily dependent onthe phenotype of a plant and instead can be based on geneticinvestigations. For example, one can utilize a suitable genetic markerwhich is closely genetically linked to a trait of interest. One of thesemarkers can be used to identify the presence or absence of a trait inthe offspring of a particular cross, and can be used in selection ofprogeny for continued breeding. This technique is commonly referred toas marker assisted selection. Any other type of genetic marker or otherassay which is able to identify the relative presence or absence of atrait of interest in a plant can also be useful for breeding purposes.Procedures for marker assisted selection are well known in the art. Suchmethods will be of particular utility in the case of recessive traitsand variable phenotypes, or where conventional assays may be moreexpensive, time consuming or otherwise disadvantageous. Types of geneticmarkers which could be used in accordance with the invention include,but are not necessarily limited to, Simple Sequence Length Polymorphisms(SSLPs) (Williams et al., Nucleic Acids Res., 1 8:6531-6535, 1990),Randomly Amplified Polymorphic DNAs (RAPDs), DNA AmplificationFingerprinting (DAF), Sequence Characterized Amplified Regions (SCARs),Arbitrary Primed Polymerase Chain Reaction (AP-PCR), Amplified FragmentLength Polymorphisms (AFLPs) (EP 534 858, specifically incorporatedherein by reference in its entirety), and Single NucleotidePolymorphisms (SNPs) (Wang et al., Science, 280:1077-1082, 1998).

F. Plants Derived by Genetic Engineering

Many useful traits that can be introduced by backcrossing, as well asdirectly into a plant, are those which are introduced by genetictransformation techniques. Genetic transformation may therefore be usedto insert a selected transgene into a plant of the invention or may,alternatively, be used for the preparation of transgenes which can beintroduced by backcrossing. Methods for the transformation of plantsthat are well known to those of skill in the art and applicable to manycrop species include, but are not limited to, electroporation,microprojectile bombardment, Agrobacterium-mediated transformation anddirect DNA uptake by protoplasts.

To effect transformation by electroporation, one may employ eitherfriable tissues, such as a suspension culture of cells or embryogeniccallus or alternatively one may transform immature embryos or otherorganized tissue directly. In this technique, one would partiallydegrade the cell walls of the chosen cells by exposing them topectin-degrading enzymes (pectolyases) or mechanically wound tissues ina controlled manner.

An efficient method for delivering transforming DNA segments to plantcells is microprojectile bombardment. In this method, particles arecoated with nucleic acids and delivered into cells by a propellingforce. Exemplary particles include those comprised of tungsten,platinum, and preferably, gold. For the bombardment, cells in suspensionare concentrated on filters or solid culture medium. Alternatively,immature embryos or other target cells may be arranged on solid culturemedium. The cells to be bombarded are positioned at an appropriatedistance below the macroprojectile stopping plate.

An illustrative embodiment of a method for delivering DNA into plantcells by acceleration is the Biolistics Particle Delivery System, whichcan be used to propel particles coated with DNA or cells through ascreen, such as a stainless steel or Nytex screen, onto a surfacecovered with target cells. The screen disperses the particles so thatthey are not delivered to the recipient cells in large aggregates.Microprojectile bombardment techniques are widely applicable, and may beused to transform virtually any plant species.

Agrobacterium-mediated transfer is another widely applicable system forintroducing gene loci into plant cells. An advantage of the technique isthat DNA can be introduced into whole plant tissues, thereby bypassingthe need for regeneration of an intact plant from a protoplast. ModernAgrobacterium transformation vectors are capable of replication in E.coli as well as Agrobacterium, allowing for convenient manipulations(Klee et al., Bio-Technology, 3(7):637-642, 1985). Moreover, recenttechnological advances in vectors for Agrobacterium-mediated genetransfer have improved the arrangement of genes and restriction sites inthe vectors to facilitate the construction of vectors capable ofexpressing various polypeptide coding genes. The vectors described haveconvenient multi-linker regions flanked by a promoter and apolyadenylation site for direct expression of inserted polypeptidecoding genes. Additionally, Agrobacterium containing both armed anddisarmed Ti genes can be used for transformation.

In those plant strains where Agrobacterium-mediated transformation isefficient, it is the method of choice because of the facile and definednature of the gene locus transfer. The use of Agrobacterium-mediatedplant integrating vectors to introduce DNA into plant cells is wellknown in the art (Fraley et al., Bio/Technology, 3:629-635, 1985; U.S.Pat. No. 5,563,055).

Transformation of plant protoplasts also can be achieved using methodsbased on calcium phosphate precipitation, polyethylene glycol treatment,electroporation, and combinations of these treatments (see, e.g.,Potrykus et al., Mol. Gen. Genet., 199:183-188, 1985; Omirulleh et al.,Plant Mol. Biol., 21(3):415-428, 1993; Fromm et al., Nature,312:791-793, 1986; Uchimiya et al., Mol. Gen. Genet., 204:204, 1986;Marcotte et al., Nature, 335:454, 1988). Transformation of plants andexpression of foreign genetic elements is exemplified in Choi et al.(Plant Cell Rep., 13: 344-348, 1994), and Ellul et al. (Theor. Appl.Genet., 107:462-469, 2003).

A number of promoters have utility for plant gene expression for anygene of interest including but not limited to selectable markers,scoreable markers, genes for pest tolerance, disease resistance,nutritional enhancements and any other gene of agronomic interest.Examples of constitutive promoters useful for plant gene expressioninclude, but are not limited to, the cauliflower mosaic virus (CaMV)P-35S promoter, which confers constitutive, high-level expression inmost plant tissues (see, e.g., Odel et al., Nature, 313:810, 1985),including in monocots (see, e.g., Dekeyser et al., Plant Cell, 2:591,1990; Terada and Shimamoto, Mol. Gen. Genet., 220:389, 1990); a tandemlyduplicated version of the CaMV 35S promoter, the enhanced 35S promoter(P-e35S); 1 the nopaline synthase promoter (An et al., Plant Physiol.,88:547, 1988); the octopine synthase promoter (Fromm et al., Plant Cell,1:977, 1989); and the figwort mosaic virus (P-FMV) promoter as describedin U.S. Pat. No. 5,378,619 and an enhanced version of the FMV promoter(P-eFMV) where the promoter sequence of P-FMV is duplicated in tandem;the cauliflower mosaic virus 19S promoter; a sugarcane bacilliform viruspromoter; a commelina yellow mottle virus promoter; and other plant DNAvirus promoters known to express in plant cells.

A variety of plant gene promoters that are regulated in response toenvironmental, hormonal, chemical, and/or developmental signals can alsobe used for expression of an operably linked gene in plant cells,including promoters regulated by (1) heat (Callis et al., PlantPhysiol., 88:965, 1988), (2) light (e.g., pea rbcS-3A promoter,Kuhlemeier et al., Plant Cell, 1:471, 1989; maize rbcS promoter,Schaffner and Sheen, Plant Cell, 3:997, 1991; or chlorophyll a/b-bindingprotein promoter, Simpson et al., EMBO J., 4:2723, 1985), (3) hormones,such as abscisic acid (Marcotte et al., Plant Cell, 1:969, 1989), (4)wounding (e.g., wunl, Siebertz et al., Plant Cell, 1:961, 1989); or (5)chemicals such as methyl jasmonate, salicylic acid, or Safener. It mayalso be advantageous to employ organ-specific promoters (e.g., Roshal etal., EMBO J., 6:1155, 1987; Schernthaner et al., EMBO J., 7:1249, 1988;Bustos et al., Plant Cell, 1:839, 1989).

Exemplary nucleic acids which may be introduced to plants of thisinvention include, for example, DNA sequences or genes from anotherspecies, or even genes or sequences which originate with or are presentin the same species, but are incorporated into recipient cells bygenetic engineering methods rather than classical reproduction orbreeding techniques. However, the term “exogenous” is also intended torefer to genes that are not normally present in the cell beingtransformed, or perhaps simply not present in the form, structure, etc.,as found in the transforming DNA segment or gene, or genes which arenormally present and that one desires to express in a manner thatdiffers from the natural expression pattern, e.g., to over-express.Thus, the term “exogenous” gene or DNA is intended to refer to any geneor DNA segment that is introduced into a recipient cell, regardless ofwhether a similar gene may already be present in such a cell. The typeof DNA included in the exogenous DNA can include DNA which is alreadypresent in the plant cell, DNA from another plant, DNA from a differentorganism, or a DNA generated externally, such as a DNA sequencecontaining an antisense message of a gene, or a DNA sequence encoding asynthetic or modified version of a gene.

Many hundreds if not thousands of different genes are known and couldpotentially be introduced into a tomato plant according to theinvention. Non-limiting examples of particular genes and correspondingphenotypes one may choose to introduce into a tomato plant include oneor more genes for insect tolerance, such as a Bacillus thuringiensis(B.t.) gene, pest tolerance such as genes for fungal disease control,herbicide tolerance such as genes conferring glyphosate tolerance, andgenes for quality improvements such as yield, nutritional enhancements,environmental or stress tolerances, or any desirable changes in plantphysiology, growth, development, morphology or plant product(s). Forexample, structural genes would include any gene that confers insecttolerance including but not limited to a Bacillus insect control proteingene as described in WO 99/31248, herein incorporated by reference inits entirety, U.S. Pat. No. 5,689,052, herein incorporated by referencein its entirety, U.S. Pat. Nos. 5,500,365 and 5,880,275, hereinincorporated by reference in their entirety. In another embodiment, thestructural gene can confer tolerance to the herbicide glyphosate asconferred by genes including, but not limited to Agrobacterium strainCP4 glyphosate resistant EPSPS gene (aroA:CP4) as described in U.S. Pat.No. 5,633,435, herein incorporated by reference in its entirety, orglyphosate oxidoreductase gene (GOX) as described in U.S. Pat. No.5,463,175, herein incorporated by reference in its entirety.

Alternatively, the DNA coding sequences can affect these phenotypes byencoding a non-translatable RNA molecule that causes the targetedinhibition of expression of an endogenous gene, for example viaantisense- or cosuppression-mediated mechanisms (see, for example, Birdet al., Biotech. Gen. Engin. Rev., 9:207, 1991). The RNA could also be acatalytic RNA molecule (i.e., a ribozyme) engineered to cleave a desiredendogenous mRNA product (see for example, Gibson and Shillito, Mol.Biotech., 7:125, 1997). Thus, any gene which produces a protein or mRNAwhich expresses a phenotype or morphology change of interest is usefulfor the practice of the present invention.

G. Definitions

In the description and tables herein, a number of terms are used. Inorder to provide a clear and consistent understanding of thespecification and claims, the following definitions are provided:

Allele: Any of one or more alternative forms of a gene locus, all ofwhich alleles relate to one trait or characteristic. In a diploid cellor organism, the two alleles of a given gene occupy corresponding locion a pair of homologous chromosomes.

Backcrossing: A process in which a breeder repeatedly crosses hybridprogeny, for example a first generation hybrid (F₁), back to one of theparents of the hybrid progeny. Backcrossing can be used to introduce oneor more single locus conversions from one genetic background intoanother.

Crossing: The mating of two parent plants.

Cross-pollination: Fertilization by the union of two gametes fromdifferent plants.

Diploid: A cell or organism having two sets of chromosomes.

Emasculate: The removal of plant male sex organs or the inactivation ofthe organs with a cytoplasmic or nuclear genetic factor or a chemicalagent conferring male sterility.

Enzymes: Molecules which can act as catalysts in biological reactions.

F₁ Hybrid: The first generation progeny of the cross of two nonisogenicplants.

Genotype: The genetic constitution of a cell or organism.

Haploid: A cell or organism having one set of the two sets ofchromosomes in a diploid.

Linkage: A phenomenon wherein alleles on the same chromosome tend tosegregate together more often than expected by chance if theirtransmission was independent.

Marker: A readily detectable phenotype, preferably inherited incodominant fashion (both alleles at a locus in a diploid heterozygoteare readily detectable), with no environmental variance component, i.e.,heritability of 1.

Phenotype: The detectable characteristics of a cell or organism, whichcharacteristics are the manifestation of gene expression.

Quantitative Trait Loci (QTL): Quantitative trait loci (QTL) refer togenetic loci that control to some degree numerically representabletraits that are usually continuously distributed.

Resistance: As used herein, the terms “resistance” and “tolerance” areused interchangeably to describe plants that show no symptoms to aspecified biotic pest, pathogen, abiotic influence or environmentalcondition. These terms are also used to describe plants showing somesymptoms but that are still able to produce marketable product with anacceptable yield. Some plants that are referred to as resistant ortolerant are only so in the sense that they may still produce a crop,even though the plants are stunted and the yield is reduced.

Regeneration: The development of a plant from tissue culture.

Royal Horticultural Society (RHS) color chart value: The RHS color chartis a standardized reference which allows accurate identification of anycolor. A color's designation on the chart describes its hue, brightnessand saturation. A color is precisely named by the RHS color chart byidentifying the group name, sheet number and letter, e.g., Yellow-OrangeGroup 19A or Red Group 41B.

Self-pollination: The transfer of pollen from the anther to the stigmaof the same plant.

Single Locus Converted (Conversion) Plant: Plants which are developed bya plant breeding technique called backcrossing, wherein essentially allof the morphological and physiological characteristics of a tomatovariety are recovered in addition to the characteristics of the singlelocus transferred into the variety via the backcrossing technique and/orby genetic transformation.

Substantially Equivalent: A characteristic that, when compared, does notshow a statistically significant difference (e.g., p=0.05) from themean.

Tissue Culture: A composition comprising isolated cells of the same or adifferent type or a collection of such cells organized into parts of aplant.

Transgene: A genetic locus comprising a sequence which has beenintroduced into the genome of a tomato plant by transformation.

H. Deposit Information

A deposit of tomato hybrid SV4483TD and inbred parent line FDR-9Q09137,disclosed above and recited in the claims, has been made with theAmerican Type Culture Collection (ATCC), 10801 University Blvd.,Manassas, Va. 20110-2209. The date of deposit was Sep. 4, 2015. Theaccession numbers for those deposited seeds of tomato hybrid SV4483TDand inbred parent line FDR-9Q09137, are ATCC Accession No. PTA-122507and PTA-122505, respectively. Upon issuance of a patent, allrestrictions upon the deposits will be removed, and the deposits areintended to meet all of the requirements of 37 C.F.R. § 1.801-1.809. Thedeposits will be maintained in the depository for a period of 30 years,or 5 years after the last request, or for the effective life of thepatent, whichever is longer, and will be replaced if necessary duringthat period.

Although the foregoing invention has been described in some detail byway of illustration and example for purposes of clarity andunderstanding, it will be obvious that certain changes and modificationsmay be practiced within the scope of the invention, as limited only bythe scope of the appended claims.

All references cited herein are hereby expressly incorporated herein byreference.

What is claimed is:
 1. A tomato seed of tomato hybrid SV4483TD, a sampleof seed of said hybrid SV4483TD having been deposited under ATCCAccession Number PTA-122507.
 2. A tomato plant grown from the seed ofclaim
 1. 3. A plant part of the plant of claim
 2. 4. The plant part ofclaim 3, further defined as a leaf, an ovule, pollen, a fruit, or acell.
 5. A tissue culture of regenerable cells of the plant of claim 2.6. The tissue culture according to claim 5, comprising cells orprotoplasts from a plant part selected from the group consisting ofembryos, meristems, cotyledons, pollen, leaves, anthers, roots, roottips, pistils, flowers, seeds and stalks, wherein said cells orprotoplasts comprise a cell or protoplast of said tomato hybridSV4483TD, a sample of seed of said hybrid SV4483TD having been depositedunder ATCC Accession Number PTA-122507.
 7. A tomato plant regeneratedfrom the tissue culture of claim 5, wherein said plant has all of themorphological and physiological characteristics of tomato hybridSV4483TD, a sample of seed of said hybrid SV4483TD having been depositedunder ATCC Accession Number PTA-122507.
 8. A method of vegetativelypropagating the tomato plant of claim 2 comprising the steps of: (a)collecting tissue capable of being propagated from the plant accordingto claim 2; (b) cultivating said tissue to obtain proliferated shoots;and (c) rooting said proliferated shoots to obtain rooted plantlets. 9.The method of claim 8, further comprising growing at least a firsttomato plant from said rooted plantlets.
 10. A method of producing atomato plant comprising an added trait, the method comprisingintroducing by transformation a transgene conferring the trait into aplant of tomato hybrid SV4483TD, a sample of seed of said hybrid havingbeen deposited under ATCC Accession Number PTA-122507.
 11. A tomatoplant produced by the method of claim
 10. 12. A plant of tomato hybridSV4483TD, further comprising a transgene, a sample of seed of saidhybrid SV4483TD having been deposited under ATCC Accession NumberPTA-122507, wherein said plant otherwise comprises essentially all ofthe morphological and physiological characteristics of hybrid SV4483TD.13. The plant of claim 12, wherein the transgene confers a traitselected from the group consisting of male sterility, herbicidetolerance, insect resistance, pest resistance, disease resistance,modified fatty acid metabolism, environmental stress tolerance, modifiedcarbohydrate metabolism and modified protein metabolism.
 14. A plant oftomato hybrid SV4483TD, further comprising a single locus conversion, asample of seed of said hybrid SV4483TD having been deposited under ATCCAccession Number PTA-122507, wherein said plant otherwise comprises allof the morphological and physiological characteristics of hybridSV4483TD.
 15. The plant of claim 14, wherein the single locus conversionconfers a trait selected from the group consisting of male sterility,herbicide tolerance, insect resistance, pest resistance, diseaseresistance, modified fatty acid metabolism, environmental stresstolerance, modified carbohydrate metabolism and modified proteinmetabolism.
 16. A method for producing a seed of a tomato plant derivedfrom tomato hybrid SV4483TD comprising the steps of: (a) crossing atomato plant of hybrid SV4483TD with itself or a second tomato plant, asample of seed of said hybrid having been deposited under ATCC AccessionNumber PTA-122507; and (b) allowing seed of a hybrid SV4483TD-derivedtomato plant to form.
 17. A method of producing a seed of a hybridSV4483TD-derived tomato plant comprising the steps of: (a) producing ahybrid SV4483TD-derived tomato plant from a seed produced by crossing atomato plant of hybrid SV4483TD with itself or a second tomato plant, asample of seed of said hybrid having been deposited under ATCC AccessionNumber PTA-122507; and (b) crossing the hybrid SV4483TD-derived tomatoplant with itself or a different tomato plant to obtain a seed of afurther hybrid SV4483TD-derived tomato plant.
 18. The method of claim17, further comprising repeating said producing and crossing steps of(a) and (b) using a seed from said step (b) for at least one generationto produce a seed of an additional hybrid SV4483TD-derived tomato plant.19. A method of producing a tomato seed comprising crossing the plant ofclaim 2 with itself or a second tomato plant and allowing seed to form.20. A method of producing a tomato fruit comprising: (a) obtaining theplant according to claim 2, wherein the plant has been cultivated tomaturity; and (b) collecting a tomato fruit from the plant.